How many movies have Hans Sibbel and Kathleen Warners collaborated on?

They have worked on 9 movies together! Their first movie together was Lebbis: Kingsize (2000) while their highest rated movie together was Lebbis: Het Grijze Gebied (2014). They have not worked together since Lebbis: De Bovengrens (2018). They are most known for their comedy films together.